Electric door-operating device



(No Model.) s sheetssheet 1. R. F. TROY.

BLBOTRIO DOOR OPERATING DEVICE.

110.461,122. Patented Oct. 13,1891.

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R. F. TROY.

ELECTRIC DOOR OPERATING DEVICE. 110.461,122. Patented Oct. 13,1891.

(No Model.) 8 Sheets-Sheet 3.

R. P. TROY.

ELECTRIC DOOR OPERATING DEVICE.

No. 461,122. Patented Oct. 13,1891.

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(No Model.) 8 Sheetsf-Sheet 4; R. F. TROY.

ELECTRIC DOOR OPERATING DEVICE. 110,461,122. Patented Oct. 13,1891.

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ELECTRIC DOOR OPERATING DEVICE.

110.461,122. Patented oet. 13,1891.

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ELECTRIC DOCE OPERATING DEVICE;

No. 461,122. Patented Oct. 13,1891.

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(No Model.) 8 Sheets-Sheet 8.

R. F. TROY. ELECTRIC DooE OPERATING DEvIcE.

110,461,122. Patented Oct. 13,1891.

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ROBERTS F. TROY, OF MADISON, VISOONSIN.

ELECTRlC DOOR-OPERATING DEVICE.

SPECIFICATION forming part of Letters Patent No. 461,122, dated October 13, 1891. Application filed September 18, 1890. Serial No. 365,338. (No model.)

To @ZZ whom, it may concern:

Be it known that I, ROBERTUS F. TROY, of the city of Madison, county of Dane, and State of lVisconsin, have invented certain new and useful Improvements in Door Opening and Closing Devices, of which the following is a specification, reference being had to the accompanying drawings.

The object of my invention is to produce a device that will open and close a door automatically upon a person approaching and passing through the doorway.

In the accompanying drawings, Figure 1 shows a door and its frame provided with my invention. Fig. 2 is a sectional view of the door-opening part of my apparatus. Figs. 3 and 4 are diagrammatical views showing the arrangement of the magnet and motor wires. Fig. 5 is a view of the details of an electromagnet. Fig. 6 shows an electro-magnet in combination with the clutchlever. Figs. 7, S, and 9 are views of the clutch mechanism in detail. Figs. l0 and 1l illustrate the switchoperating platform, and Figs. l2 and 13 a modified form of switch-operating mechanism for directing the electric current through the magnets of the motor. Fig. 1i illustrates my invention as applied to a sliding door. Fig. l5 is a side elevation of a latch adapted to be used with a sliding door, and Fig. 1G an end View thereof.

Referring to the letters on the drawings, A indicates an ordinary door, preferably provided with any suitable springs or springhinges B, such, for instance, as torsion-spring hinges, as shown in the drawings, preferably set so as to tend to keep the door open; but any suitable power instead of springs maybe used. Upon the hinge side of the door, preferably secured to the frame just above the top of the door, is a box C, of any suitable shape and size provided with a motor I), that is set upon the middle partition E.

F indicates a shaft supported in suitable bearings Gin the sides of the box and provided with the countershaft-pulley II, that is belted to the driving-shaft I of the motor. Upon the shaft F is loosely mounted the spool J, that is provided on its end opposite the pulley H with an annular groove K, across which on opposite sides project pins L. (See Figs. 7 and S.)

M and N indicate collars keyed or otherwise secured to the shaft F, and between them is loosely mounted a sliding collar that carries on its sides horizontal pins I), that are adapted to slide in perforations Q in the collars M and N. By sliding the collar O'toward the spool .I the pins I) are projected into the groove K'in the path of the pins L, thereby communicating motion when in this position to the spool.

R indicates a guide-pulley, around which passes a rope S, that is Wound around the spool .I at one end, and passing around the guide-pu1ley T is fastened at the other end to a projection U, that is secured to the door. It will be observed that by the above-described arrangement the door would normally be kept open by the action of the springhinges B, but that when the spool .I is clutched to the shaft F and the electro-motor set in operation to cause the shaft to revolve, the door will be drawn shut by the rope S. The springhinges B exert their maximum resistance when the door is closed, so that instead of slamming the door is drawn noiselessly into i its frame.

lIf in place of hinges adapted to opena door self-closing hinges were used, by dispensing with the guide-pulley T the operation and the relative offices of the springs an d motor might, by a slight change, be reversed.

In order to operate the clutch mechanism above described, I have .provided a lever V, fulcrumed to the side of the box O at W, and secured at its opposite end to the armature X of an electro-magnet Y. Z indicates a guide for this lever, and A a spring, which tends to keep the armature separated from its magnet. The lever V is provided near its middle with a band B', that loosely surrounds the sliding collar O. This band is provided with set-screws C', that enter the groove D in the periphery of the collar O, thereby allowing the collar to turn freely upon its axis, but subjecting its lateral motion to the oper ation of the lever V.

In order to automatically operate the abovedescribed mechanism, I prefer to use some ICO e teniasl sort of device in the shape of a platform'upon each side of the door operatively connected with a current of electricity for controlling the operation of the closing mechanism above described.

In Figs. and- 11 I have illustrated a plat- -form E', set upon rockers F', by which it is allowed vertical play. The rockers are all parallel and have equal length, so as tokeep the platform level. The shaft G' of the last set of rockers is rotatable, and is secured to its rockers so that when the platform is depressed a slight motion is imparted to the shaft. H' indicates a key secured to this shaft and fastened to the cord J', that is fastened at its other end to the switch-lever K'.

L indicates a spring adapted to keep the switch-lever elevated and the cord J' taut.

M' and N' indicate service-wires that are supposed to communicate with any source of electricity not shown in the drawings.

O indicates a Wire connected byva suitable binding-post with the Wire M' and the switch* lever K'.

P' and Q' indicate the respective parts of the electric switch, P' being connected With the Wire N through the electro-magnet Y by the Wire R'. The part Q' is connected with the Same servicewire by the wire S', that passes through the electric motor and unites with the wire R' at the post P2.

T indicates a switch-plate connect-ed with the wire R', and U' indicates a bell-crank `switch-lever adapted to make and break connection in the Wire S. The bell-crank switchlever, as shown in Fig. 3, isV kept normally closed-that is, while the door is shut-so as to pass current through it from S' to N'. As shown in Fig. 4, it is kept normally open by the same means. The springs V tend to operate it in the opposite direction and is ready, therefore, as soon as the door is open, to change the position of the switch-lever. The means of connection between the switch-lever and the door is a cord IV', which, by suitable pulleys, is fastened to the trigger X', that is pivoted to the lintel of the door. In the path of this trigger, upon the face of the door, is secured a projecting finger Y' that, when the door is closed, pulls 1against the trigger X', which breaks the circuit through the motor.

The armature X is connected by means of a cord Z and levers and pulleys A2 with the latch B2 of the door.

The operation of my device will be understood from the following description: Suppose the door to be closed, as shown in Fig. 1. If a person steps upon the platform on either side of the door, the key H' will depress the switchlever K', causing a current of electricity to pass from the Wire M' through the wire O' and the wire R' by way of the electro-magnet Y into the wire N'. As the current passes through the electro-magnet the armature X is attracted, thereby simultaneously* lifting the latch B2 and operating the lever V to release the spool J, so that it Will revolve freely upon the shaft F. As soon as this takesplace back by its spring, the switch-lever U' hav' ing, by the opening of the door and simultaneous action ofthe springs V', been previously separated from its switch-plate T'. Thereupon a current of electricity is passed through the wire S' and the motor around to the service-Wire N'. The armature X Will have been released by the switching of the current from the attraction of its electro-magnet, and will allow the leverV to clutch the spool J to the shaft F, sol that when the current'sets the motor in motion the shaft F being caused to revolve by it will wind the rope S and thereby draw the door shut. As soon as it is closed, the finger Y' upon the door pulls against the trigger X', switches the current olf from the motor, and leaves the mechanism in rest.

The diagram illustrated in Fig. 3 shows the Wires arranged for use in circuit Where it is desirable that the main circuit should never be shut oft'. That in Fig. 4 shows an arrangement where the circuit is to be broken and the passage of a current to be prevented, as where, for instance, a local battery, such as a storage-battery, may be employed.

Instead of mechanical means for operating the switches I may employ an electro-magnet such as illustrated in Figs. 12 and 13. Vith this arrangement, instead ofa depressible platform, I use a wellknown circuitmakingmat, which causes a current to pass from the battery through the electro-magnet C2, Whose armature D2 is connected with the switch-lever K' and causes it to operate as by the means heretofore described.

I have illustrated and described what I consider to be a preferable embodiment of my invention; but I do not wish to Alimit myself to the exact details, because it is apparent that they may be in many Ways varied Without departing from the scope of my -invention. For instance, a sliding door may be ob viously substituted for a swinging door, arranged, for instance, as shown in Fig. 14 of the drawings. In that ligure the oiice of all the parts remain the same, as described, in relation to the swinging door, except that a Weight C2 is substituted for the spring-hinges to cause the door toopen.

1. The combination, with. a door and its frame, of an electric motor operatively connected with the door-,with its wire connections, an electric switch adapted to switch a current of electricity through or around the motor, and a platform in front of the door adapted to be operated to Work the switch to set the motor in motion to operate the door, substantially as set forth.

2. The combination, with the door and its frame, of an electric motor and its wires, an electric switch adapted to switch an electric IOC IIO

current through or around the motor, a spool I operatively connected with the motor and adapted to wind a rope fastened to the door, an electro-magnet communicating with the current of electricity that operates the motor, a clutch adapted to engage and disengage the spool, a lever connected with the arma- O', connected with the switch-lever K', the,

wire R', connecting the plate P with the wire N by way of an electro-magnet, the armature of said electro-magnet being operatively con nected with the electric motor to start or stop it and with the latch of a door to lift it, the wire S,connecting the plate Q with the wire N by way of the electric motor, the switch-lever U adapted to be operated by the opening and closing of the door, and means for operating the lever K', substantially as set forth.

et. In combination with the switch-arm of an electric switch, a platform set upon rockers, the shaft of one set of rockers being secured to its rockers, a key upon the shaft, and connecting parts between said key and the switchlever, substantially as set forth.

5. A clutch consisting of the combination, with a shaft, of a longitudinally-imnlovable revoluble spool carried thereon and provided with an annular groove in one end and pins projecting across said groove, two perforated collars keyed to the shaft, a sliding collar between the same provided with pins adapted to fit and slide within the perforations of the fixed collars, and means for operating said sliding collar, substantially as set forth.

In testimony of all which l have hereunto subscribed my naine.

ROBERTUS F. TROY.

Vitnesses:

A. FRIsBIE, C. P. ELWELL. 

